A fan of William James I was unfamiliar with this quote. What are your thoughts?

“Take the happiest man,
the one most envied by the world,
and in nine cases out of ten
his inmost consciousness is one of failure.
Either his ideals in the line of his achievements
are pitched far higher than the achievements themselves, or else he has secret ideals of which
the world knows nothing, and in regard to which
he inwardly knows himself to be found wanting.”

~William James~